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The Details
Object
NGC 281 in Cassiopeia
Optics
Astro-Physics 160 EDF Refractor at f/7.7
Platform
Astro-Physics 1200 GTO
Camera
SBIG ST-10XME
Filters
Tru-Balance 5nm Hydrogen-alpha filter
Date
01 and 03 November 2010
Location
Mount Wilson Observatory - Mount Wilson, CA
Exposure
Ha 26 x 1200 sec 1x1 bin (8h40m total exposure)
Software
Maxim DL/CCD, CCD Stack, Photoshop CS5
Orientation
Field of View: 40'26" x 27'10" centered on RA 00h53m04s
DEC+56°34'08" (2000.0) . North angle 269.5°; east 90° CCW from north
Notes

NGC 281, the Pac-Man Nebula in Cassiopeia, is an often imaged target of amateur astronomers. Lying at a distance of about 9500 light years from Earth, this spectacular emission nebula is noted for its deep, dark gash of obscuring dust and numerous Bok globules. At the center lies the small open cluster IC 1590, its massive young stars providing the illumination for the nebula. The brightest of these stars is a multiple system named BU 1 for its discoverer, the famed double star astronomer S.W. Burnham.

 

 

 

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